github.com/hxx258456/ccgo@v0.0.5-0.20230213014102-48b35f46f66f/xcrypto/pkcs12/safebags.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package pkcs12
     6  
     7  import (
     8  	"encoding/asn1"
     9  	"errors"
    10  
    11  	"github.com/hxx258456/ccgo/x509"
    12  )
    13  
    14  var (
    15  	// see https://tools.ietf.org/html/rfc7292#appendix-D
    16  	oidCertTypeX509Certificate = asn1.ObjectIdentifier([]int{1, 2, 840, 113549, 1, 9, 22, 1})
    17  	oidPKCS8ShroundedKeyBag    = asn1.ObjectIdentifier([]int{1, 2, 840, 113549, 1, 12, 10, 1, 2})
    18  	oidCertBag                 = asn1.ObjectIdentifier([]int{1, 2, 840, 113549, 1, 12, 10, 1, 3})
    19  )
    20  
    21  type certBag struct {
    22  	Id   asn1.ObjectIdentifier
    23  	Data []byte `asn1:"tag:0,explicit"`
    24  }
    25  
    26  func decodePkcs8ShroudedKeyBag(asn1Data, password []byte) (privateKey interface{}, err error) {
    27  	pkinfo := new(encryptedPrivateKeyInfo)
    28  	if err = unmarshal(asn1Data, pkinfo); err != nil {
    29  		return nil, errors.New("pkcs12: error decoding PKCS#8 shrouded key bag: " + err.Error())
    30  	}
    31  
    32  	pkData, err := pbDecrypt(pkinfo, password)
    33  	if err != nil {
    34  		return nil, errors.New("pkcs12: error decrypting PKCS#8 shrouded key bag: " + err.Error())
    35  	}
    36  
    37  	ret := new(asn1.RawValue)
    38  	if err = unmarshal(pkData, ret); err != nil {
    39  		return nil, errors.New("pkcs12: error unmarshaling decrypted private key: " + err.Error())
    40  	}
    41  
    42  	if privateKey, err = x509.ParsePKCS8PrivateKey(pkData); err != nil {
    43  		return nil, errors.New("pkcs12: error parsing PKCS#8 private key: " + err.Error())
    44  	}
    45  
    46  	return privateKey, nil
    47  }
    48  
    49  func decodeCertBag(asn1Data []byte) (x509Certificates []byte, err error) {
    50  	bag := new(certBag)
    51  	if err := unmarshal(asn1Data, bag); err != nil {
    52  		return nil, errors.New("pkcs12: error decoding cert bag: " + err.Error())
    53  	}
    54  	if !bag.Id.Equal(oidCertTypeX509Certificate) {
    55  		return nil, NotImplementedError("only X509 certificates are supported")
    56  	}
    57  	return bag.Data, nil
    58  }